Zhu Ling: Woman dies decades after unsolved China poisoning

Zhu Ling, 50, was poisoned with the highly toxic thallium in 1994 but no-one was ever convicted.

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United States , White House , District Of Columbia , Zhu Ling , Guangdong , China , Beijing , Chinese , Sun Wei , Sun Yueqi , Public Security Bureau , Tsinghua University , Beijing Public Security Bureau , Thallium Poisoning , Jun Wei ,